Hello Suckerforpunishment, and can I join Sophie in offering you a warm welcome to the site.
Living with someone who is addicted, and in this case, it's alcohol, can absolutely affect you, as well as the kids, not only in their behaviour but also the cost of drinking 12 cans a night, with the possibility of having more outside of the house, which may be unknown, but know that once you start drinking, there is every chance other cans may be hidden away and whether or not he drinks at his mate's place.
Although he may not be violent, he can be aggressive as you have told us and that's definitely a warning sign because his drinking is excessive can have consequences, including damaging your relationship only as the alcohol is more important and comes first before anything else.
He would be delighted that you go to work, not only because of the money you earn but his ability to feel as though he can drink when no one is home or until the kids get home from school and may ignore their requests or demand what they should be doing, so it's going to affect how they are feeling and certainly something that you are going to worry about.
Trying to explain that he needs to be rational about the situation, will be very difficult for him to understand, his priority is the alcohol, not the relationship, nor how to assist in helping towards the run of the house.
Al Anon 1300 252 666 can firstly help the kids talk with qualified counsellors who dress in casual clothes and breaks down any barrier between them and the counsellors, I know they helped my sons when I was drinking when I was in depression.
Secondly, you might want to talk to people where you work who will support and understand what you're saying, just as we do and a decision needs to be made and please remember the reason why he drinks is only what he believes and is no fault of yours.
Can I ask you a question and please only answer if you want to, the house/flat you're living in is it in your name or joint names, we hope to hear back from you whenever you're available.